Anaerobic Respiration and fermentation

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Presentation transcript:

Anaerobic Respiration and fermentation

What happens when there is no oxygen? Recall: Oxygen is electronegative and is the reason behind the electron transport chain Anaerobic Respiration: Cellular respiration without oxygen present- LESS ATP Prokaryotes and organisms with limited oxygen do not use oxygen as their final acceptor at the end of the electron transport chain (ex: sulfate ions)

An extension of glycolysis Low generation of ATP Two types Fermentation An extension of glycolysis Low generation of ATP Two types Lactic Acid Fermentation Alcohol Fermentation

Alcohol Fermentation Pyruvate is converted to ethanol Yeast and bacteria carry out alcohol fermentation

Lactic acid fermentation Pyruvate reduces to lactate by NADH and carbon dioxide is not released Fungi and Bacteria use this (Dairy industry) Humans during exercise

Aerobic Anaerobic Fermentation Electron transport chain is final e- acceptor 32 ATP Glycolysis Final e- acceptor js another e- molecule (not oxygen) Final e- acceptor is an organic molecule 2 ATP